View source for 8ox1


==Structure of TRF1core in complex with telomeric nucleosome==
<StructureSection load='8ox1' size='340' side='right'caption='[[8ox1]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8ox1]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8OX1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8OX1 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SEP:PHOSPHOSERINE'>SEP</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8ox1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ox1 OCA], [https://pdbe.org/8ox1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ox1 RCSB], [https://www.ebi.ac.uk/pdbsum/8ox1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ox1 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/H31_HUMAN H31_HUMAN] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Shelterin and nucleosomes are the key players that organize mammalian chromosome ends into the protective telomere caps. However, how they interact with each other at telomeres remains unknown. We report cryo-electron microscopy structures of a human telomeric nucleosome both unbound and bound to the shelterin factor TRF1. Our structures reveal that TRF1 binds unwrapped nucleosomal DNA ends by engaging both the nucleosomal DNA and the histone octamer. Unexpectedly, TRF1 binding shifts the register of the nucleosomal DNA by 1 bp. We discovered that phosphorylation of the TRF1 C terminus and a noncanomical DNA binding surface on TRF1 are critical for its association with telomeric nucleosomes. These insights into shelterin-chromatin interactions have crucial implications for understanding telomeric chromatin organization and other roles of shelterin at telomeres including replication and transcription.

Structural basis of telomeric nucleosome recognition by shelterin factor TRF1.,Hu H, van Roon AM, Ghanim GE, Ahsan B, Oluwole AO, Peak-Chew SY, Robinson CV, Nguyen THD Sci Adv. 2023 Aug 25;9(34):eadi4148. doi: 10.1126/sciadv.adi4148. Epub 2023 Aug , 25. PMID:37624885<ref>PMID:37624885</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8ox1" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Ahsan B]]
[[Category: Ghanim GE]]
[[Category: Hu H]]
[[Category: Nguyen THD]]
[[Category: Oluwole A]]
[[Category: Peak-Chew S]]
[[Category: Robinson CV]]
[[Category: Van Roon AMM]]